Regardless of whether it's legally binding, what we see here is an anecdote where there was a delay in treatment. Why should he expect that it would be ignored?

Regardless of whether it's legally binding, what we see here is an anecdote where there was a delay in treatment. Why should he expect that it would be ignored? People get serious tattoos all the time: https://www.google.com/search?q=medic+alert+bracelet+tattoo https://www.google.com/search?q=medic+alert+bracelet+tattoo